﻿#region Copyright & License Information
/*
 * Copyright 2007-2017 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation, either version 3 of
 * the License, or (at your option) any later version. For more
 * information, see COPYING.
 */
#endregion

using System;
using System.Collections.Generic;
using OpenRA.Mods.Common;
using OpenRA.Mods.Common.Activities;
using OpenRA.Mods.Common.Orders;
using OpenRA.Mods.Common.Traits;
using OpenRA.Mods.MW.Activities;
using OpenRA.Traits;

namespace OpenRA.Mods.MW.Traits
{
    [Desc("Actor becomes a specified actor type when this trait is triggered.")]
    public class SkipTransformsInfo : ITraitInfo
    {
        [Desc("Actor to transform into."), ActorReference, FieldLoader.Require]
        public readonly string IntoActor = null;

        [Desc("Offset to spawn the transformed actor relative to the current cell.")]
        public readonly CVec Offset = CVec.Zero;

        [Desc("Facing that the actor must face before transforming.")]
        public readonly int Facing = 96;

        [Desc("Sounds to play when transforming.")]
        public readonly string[] TransformSounds = { };

        [Desc("Sounds to play when the transformation is blocked.")]
        public readonly string[] NoTransformSounds = { };

        [Desc("Notification to play when transforming.")]
        public readonly string TransformNotification = null;

        [Desc("Notification to play when the transformation is blocked.")]
        public readonly string NoTransformNotification = null;

        [Desc("Cursor to display when able to (un)deploy the actor.")]
        public readonly string DeployCursor = "deploy";

        [Desc("Cursor to display when unable to (un)deploy the actor.")]
        public readonly string DeployBlockedCursor = "deploy-blocked";

        public readonly bool SkipMakeAnimation = false;

        public readonly bool SkipUndoAnimation = false;

        [VoiceReference] public readonly string Voice = "Action";

        public virtual object Create(ActorInitializer init) { return new SkipTransforms(init, this); }
    }

    public class SkipTransforms : IIssueOrder, IResolveOrder, IOrderVoice, IIssueDeployOrder
    {
        readonly Actor self;
        readonly SkipTransformsInfo info;
        readonly string faction;

        public SkipTransforms(ActorInitializer init, SkipTransformsInfo info)
        {
            self = init.Self;
            this.info = info;
            faction = init.Contains<FactionInit>() ? init.Get<FactionInit, string>() : self.Owner.Faction.InternalName;
        }

        public string VoicePhraseForOrder(Actor self, Order order)
        {
            return (order.OrderString == "DeployTransform") ? info.Voice : null;
        }

        public IEnumerable<IOrderTargeter> Orders
        {
            get
            {
                yield return new DeployOrderTargeter("DeployTransform", 5,
              () => info.DeployCursor);
            }
        }

        public Order IssueOrder(Actor self, IOrderTargeter order, Target target, bool queued)
        {
            if (order.OrderID == "DeployTransform")
                return new Order(order.OrderID, self, queued);

            return null;
        }

        Order IIssueDeployOrder.IssueDeployOrder(Actor self)
        {
            return new Order("DeployTransform", self, false);
        }

        public void DeployTransform(bool queued)
        {
            if (!queued)
                self.CancelActivity();

            self.QueueActivity(new InstantTransform(self, info.IntoActor)
            {
                Offset = info.Offset,
                Facing = info.Facing,
                Sounds = info.TransformSounds,
                Notification = info.TransformNotification,
                Faction = faction,
                SkipMakeAnims = info.SkipMakeAnimation,
                SkipSelfMakeAnims = info.SkipUndoAnimation
            });
        }

        public void ResolveOrder(Actor self, Order order)
        {
            if (order.OrderString == "DeployTransform")
                DeployTransform(order.Queued);
        }

        bool IIssueDeployOrder.CanIssueDeployOrder(Actor self) { return true; }
    }
}
